pointer-events
当它的被设置为 none 的时候，能让元素实体虚化，虽然存在这个元素，但是该元素不会触发鼠标事件
pointer-events: none;
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1">
<title></title>
</head>
<body>
<div style="width: 100%;height: 100vh;background: rgba(0,0,0,0.1);position: fixed;top: 0;left: 0;pointer-events: none;"></div>
<div style="font-size: 36px;" id="btn">
按钮
</div>
</body>
</html>
<script>
document.getElementById('btn').onclick = function(){
console.log('按钮被触发');
}
</script>
